Dinuka Ranamukhaarachchi Email & Phone Number

Melbourne, Vic, Au

Fitzroy, Victoria, Australia

Colombo, Western Province, Sri Lanka

• Led the managed services cloud team providing technical leadership and direction for Cloud Engineering.• Managed end-to-end deployment of existing and new infrastructure into the Cloud Central service.• Provided expert-level design and engineering support towards the successful delivery of IT's cloud project portfolio.• Conducted comprehensive DevOps assessments and developed tailored roadmaps for clients, driving improvements in efficiency and productivity.• Participated in deep architectural discussions to ensure solutions were designed for successful deployment, security, cost-effectiveness, and high availability in the cloud.• Mentored and trained junior DevOps engineers, fostering a culture of continuous learning and improvement.• Architected and deployed CI/CD pipelines with Jenkins, AWS CodePipeline and CodeBuild for multiple clients

Colombo, Western Province, Sri Lanka

• Provided technical leadership and guidance to the managed services cloud team.• Implemented DevOps standards, practices, tooling, and processes.• Optimized cloud resource utilization and cost through effective monitoring, capacity planning and performance tuning.• Developed and enforced cloud security policies and procedures to protect data and applications.• Contributed and supported the corporate enterprise cloud strategy, standards, and best practices associated with all aspects of Cloud offerings.• Automated the provisioning and configuration of cloud infrastructure using Terraform.• Designed and implemented continuous integration, continuous delivery, and continuous deployments through Jenkins/CodeBuild/CodePipeLine.• Troubleshooted and resolved complex cloud infrastructure issues, ensuring minimal downtime and maintaining service level agreements (SLAs).• Implemented monitoring and logging solutions with Prometheus, Grafana and CloudWatch, improving system observability and incident response times.• Designed and deployed hybrid cloud solutions to provide seamless integration with existing on-premises solutions.• Developed Ansible playbooks for configuration management and deployment automation.• Collaborated with development teams to streamline workflows and ensure seamless code integration.• Led activities to develop business continuity and disaster recovery approaches appropriate for clients’ dependence on commercial cloud providers.

Colombo, Western, Sri Lanka

• Designed, implemented and managed cloud infrastructure on AWS leveraging services such as Control Tower, Organisations, IAM, EC2, S3, Config, API Gateway, Systems Manager, CloudTrail, Security Hub, DocumentDB, Redis, RDS, EKS, Lambda, CodePipeLine, CodeBuild, VPC, Direct Connect, AWS Network Firewall Manager, Site to site VPNs, MSK, WorkSpace, StepFunctions, Batch, SNS, SES, SQS, EventBridge, ECR, ECS, CloudFormation, WAF and Config. • Designed and developed Cloud Formation and Terraform templates to deploy the application infrastructure on AWS.• Developed a centralized deployment pipeline system within AWS to streamline the release deployment lifecycle of the application using a range of AWS services including CodeCommit, CodeBuild, CodePipeline, S3, EventBridge, EC2, shell, and python scripts.• Developed a monitoring solution in AWS for an application that included both infrastructure and application alerts using Lambda functions, CloudWatch, SNS, EventBridge, S3, and DynamoDB. • Designed, developed and maintained Kubernetes clusters and applications.• Deployed and managed DEV, QA, UAT, and PROD environments across multiple AWS accounts.• Implemented backup & restore process across AWS services using AWS backup, AWS Data Pipeline, SSM Documents, and bash scripts.• Implemented Blue/Green deployment methodology for environments to move seamlessly between application releases.• Defined incident management and change management processes across teams involved in the project.

Colombo

• Designed and managed cloud infrastructure on AWS.• Used Ansible as a configuration management tool, to automate repetitive tasks, deploy applications, manage changes, automate software updates, and verify functionality.• Designed and implemented RedHat Enterprise Virtualization (RHEV), and VMware, and managed over 40 Hypervisors with 1500+ Virtual servers.• Managed application patches, data backup, and security changes, and replaced servers.• Followed ITIL best practices and handled network, systems, and storage-related requests, incidents.• Conducted technical knowledge-sharing sessions and provided hands-on training sessions to the team.• Performed Linux Server Patching with BladeLogic and AWS SSM.• Monitored and tested application performance for potential bottlenecks, and possible solutions, and worked with developers to implement those fixes.• Documented and maintained system guides including KEDB (Known Error Database). • Provided technical support by attending and managing level 2 and 3 escalated issues.

Pearson Colombo

• Designed and managed cloud infrastructure on AWS leveraging services IAM, EC2, S3, Config, Systems Manager, CloudTrail, Security Hub, Lambda to deliver required performance, security, and availability requirements. • Designed AWS Cloud Formation templates to create custom sized VPC, subnets, NAT to ensure successful deployment of applications. • Used Terraform for building, changing, and managing cloud infrastructure and in-house solutions. • Performed Linux Server Patching with BladeLogic and AWS SSM. • Developed Python and shell scripts to automate the build and release process. • Used Ansible and Ansible Tower as configuration management tool, to automate repetitive tasks, deploy applications and manage changes and automate software update and Verify functionality. • Successfully migrated production Directory Server from 8 to directory server 11. • Improved and monitored cloud infrastructure on AWS including backups, patches, load balancing and scaling. • Monitored and tested application performance for potential bottlenecks, possible solutions, and worked with developers to implement those fixes. • Managed VMware vSphere 6.5 platform which consists of 100 hosts and 10000+ Virtual Machines • Enforced security on data and systems by applying patches through designing and configuring vendor specific (SUSE Linux, RedHat, Ubuntu, CentOS, Oracle Linux) satellite patch management network • Documented and maintained system guides including KEDB (Known Error Database) • Assisted in formulating Corporate IT/IS strategy, IT infrastructure and future planning (long/short terms) for the organization. • Collaborated closely with business stakeholders to provide resolution to issues. • Provided technical support by attending and managing level 2 and 3 escalated issues. • Planned, designed, and developed automations using automation tools [Ansible, Puppet, Forman, and Blade Logic], Perl, Bash, and python scripting languages.

Colombo, Western Province, Sri Lanka

• Performed DevOps activities including application configuration, building, automating, and managing environments.• Built and deployed an automated solution to run application performance testing on AWS infrastructure.• Established and developed continuous integration (CI) practices, procedures, and standards with JIRA, Bamboo, Stash, Perl and Bash scripting languages.• Installed, configured, and maintained Kibana, Elasticsearch Clusters, and Logstash.• Trained and mentored team members to enhance their skills and broaden their technical knowledge.• Configured NAGIOS monitoring system to identify and resolve IT infrastructure problems.• Provided expertise on business queries and system errors related to infrastructure operations and application configuration.• Conducted root case analysis, and prepared technical test plan and technical test record for defects raised.• Created and maintained documentation on the release process, support activities, user manuals, and operational procedures according to company standards.

Colombo, Western Province, Sri Lanka

• Conducted installations, updates, and patching of servers, operating systems, and services. (Windows and Linux) • Troubleshooted and administered SUSE, RedHat Linux, and Solaris operating systems. • Developed automation solutions leveraging shell, Perl, and Python scripts to increase operational efficiency.• Configured networks and troubleshooted network access for servers and clients.• Maintained DNS, DHCP, mail, web, and FTP services.• Created and used kickstart scripts for remote OS installation.• Administered virtual instances in RedHat virtualization and VMware vSphere platforms.• Configured, implemented, and maintained hardware RAID storage technology on servers. • Handled storage administration of Hitachi AMS 2100/2500, Hitachi VSP, HUS VM, EMC VNX 5200/5400, and EMC Network Access Storage (NAS) for internal infrastructure and configuration, administration of LAN/SAN environment including Cisco and Brocade switches.

Bachelor Of Science (Bsc) Special (Hon), Information Technology - Specialized In Software Engineering

Activities and Societies: Rugby

Advanced Diploma In, Information Technology

Dimploma In, Information Technology

Gce Advanced Level, Science Stream

Activities and Societies: Cricket team, Computer Society